Pressure and Buoyancy

On what principle is the buoyancy of an object based?

• Newtons Principle

• Arquimides Principle

• Bernoulli Principle

• Pascal Principle

What is the buoyant force?

• The downward force exerted by a fuid on a submerged object.

• The upward force exerted by a fluid on a submerged object.

• The force that pushed an object forward in a fluid.

• The force of attraction between two objects with mass.

How is the density of an object determined?

• Subtracting the objects mass from its volume.

• Multiplying the mass of the object by its volume.

• Adding the mass and volume of the object.

• Dividing the mass of the object by its volume.

What is the relationship between pressre and the location (depth) of an object?

• Inversely proportional.

• No relationship

• Depends on the material from which the container is made.

• Drectly proportional

What is the forumula for pressure in a fluid?

• P = ρ / V

• P = ρ * g * V

• P = ρ * g * h

• P = g * V

State Pascal's Principle

• Paascal's principle in Biology establishes the relationship between the arterial pressure and the flow of blood.

• Pascal's Principle in Chemistry describes the realtionship between temperature and pressure in a gas.

• Pascal's Principle in Geography explains the formation of mountains and valleys.

• Pascal's Principle in Physics states that the pressure applied to a confined fluid is transmitted with same intensity in all directions.

How does the density of an object affect its floatability?

• The density of an object does not affect its flotability.

• The density of an object affects its fotability, since a denser object tends to float on a liquid.

• The density of an object affects its flotability, since a less dense object tends to sink in a fluid.

• The density of an object affects its floatability, since a denser object tends to sink while a less dense object tens to float.

What is the unit for pressure?

• Second (s)

• Meter (m)

• Kilogram (kg)

• Pascal (Pa)

Why does an object foat in a fluid if its density is less than the desnity of the fluid?

• Because the object is heavier than the liquid.

• Due to the gravitational effect of the liquid.

• Because the object has magnetic properties that keep it afloat.

• Because it experiences an upward bouyant force that is eual to the weight of the displaced fluid.

A box with a base of 4m by 3m has a weight of 120 N, determine the pressure that the box exerts on the floor.

• 10 Pa

• 100 Pa

• 120 Pa

• 12 Pa